| commit | 9d3a483a3826d3749c2db9863ddb6e824f1dd6d4 | [log] [tgz] |
|---|---|---|
| author | Chris Lattner <sabre@nondot.org> | Fri Aug 26 22:49:59 2005 +0000 |
| committer | Chris Lattner <sabre@nondot.org> | Fri Aug 26 22:49:59 2005 +0000 |
| tree | 1fda75dd01b34abdd94b2ae194079213925ed67c | |
| parent | ed461e0fafbd0b905cb716df108000bcd6ecf3d4 [diff] |
Don't copy regs that are only used in the entry block into a vreg. This
changes the code generated for:
short %test(short %A) {
%B = xor short %A, -32768
ret short %B
}
to:
_test:
xori r2, r3, 32768
xoris r2, r2, 65535
extsh r3, r2
blr
instead of:
_test:
rlwinm r2, r3, 0, 16, 31
xori r2, r3, 32768
xoris r2, r2, 65535
extsh r3, r2
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23109 91177308-0d34-0410-b5e6-96231b3b80d8